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Drivers of changes in stratospheric and tropospheric ozone between year 2000 and 2100

Banerjee, A.; Maycock, A. C.; Archibald, A. T.; Luke Abraham, N.; Telford, P.; Braesicke, P.; Pyle, J. A.

A stratosphere-resolving configuration of the Met Office’s Unified Model (UM) with the United Kingdom Chemistry and Aerosols (UKCA) scheme is used to investigate the atmospheric response to changes in (a) greenhouse gases and climate, (b) ozone-depleting substances (ODSs) and (c) non-methane ozone precursor emissions. A suite of time-slice experiments show the separate, as well as pairwise, impacts of these perturbations between the years 2000 and 2100. Sensitivity to uncertainties in future greenhouse gases and aerosols is explored through the use of the Representative Concentration Pathway (RCP) 4.5 and 8.5 scenarios.
The results highlight an important role for the stratosphere in determining the annual mean tropospheric ozone response, primarily through stratosphere–troposphere exchange (STE) of ozone. Under both climate change and reductions in ODSs, increases in STE offset decreases in net chemical production and act to increase the tropospheric ozone burden. This opposes the effects of projected decreases in ozone precursors through measures to improve air quality, which act to reduce the ozone burden. The global tropospheric ... mehr

Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.5194/acp-16-2727-2016
ISSN: 1680-7316, 1680-7324
URN: urn:nbn:de:swb:90-576194
KITopen ID: 1000057619
HGF-Programm 12.04.03; LK 01
Erschienen in Atmospheric chemistry and physics
Band 16
Heft 5
Seiten 2727-2746
Lizenz CC BY 3.0 DE: Creative Commons Namensnennung 3.0 Deutschland
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